예제 #1
0
파일: nfs_clnode.c 프로젝트: coyizumi/cs111
/*
 * Reclaim an nfsnode so that it can be used for other purposes.
 */
int
ncl_reclaim(struct vop_reclaim_args *ap)
{
	struct vnode *vp = ap->a_vp;
	struct nfsnode *np = VTONFS(vp);
	struct nfsdmap *dp, *dp2;

	/*
	 * If the NLM is running, give it a chance to abort pending
	 * locks.
	 */
	if (nfs_reclaim_p != NULL)
		nfs_reclaim_p(ap);

	/*
	 * Destroy the vm object and flush associated pages.
	 */
	vnode_destroy_vobject(vp);

	if (NFS_ISV4(vp) && vp->v_type == VREG)
		/*
		 * We can now safely close any remaining NFSv4 Opens for
		 * this file. Most opens will have already been closed by
		 * ncl_inactive(), but there are cases where it is not
		 * called, so we need to do it again here.
		 */
		(void) nfsrpc_close(vp, 1, ap->a_td);

	vfs_hash_remove(vp);

	/*
	 * Call nfscl_reclaimnode() to save attributes in the delegation,
	 * as required.
	 */
	if (vp->v_type == VREG)
		nfscl_reclaimnode(vp);

	/*
	 * Free up any directory cookie structures and
	 * large file handle structures that might be associated with
	 * this nfs node.
	 */
	if (vp->v_type == VDIR) {
		dp = LIST_FIRST(&np->n_cookies);
		while (dp) {
			dp2 = dp;
			dp = LIST_NEXT(dp, ndm_list);
			FREE((caddr_t)dp2, M_NFSDIROFF);
		}
	}
	if (np->n_writecred != NULL)
		crfree(np->n_writecred);
	FREE((caddr_t)np->n_fhp, M_NFSFH);
	if (np->n_v4 != NULL)
		FREE((caddr_t)np->n_v4, M_NFSV4NODE);
	mtx_destroy(&np->n_mtx);
	uma_zfree(newnfsnode_zone, vp->v_data);
	vp->v_data = NULL;
	return (0);
}
예제 #2
0
/*
 * Reclaim an nfsnode so that it can be used for other purposes.
 */
int
ncl_reclaim(struct vop_reclaim_args *ap)
{
	struct vnode *vp = ap->a_vp;
	struct nfsnode *np = VTONFS(vp);
	struct nfsdmap *dp, *dp2;

	if (NFS_ISV4(vp) && vp->v_type == VREG)
		/*
		 * Since mmap()'d files do I/O after VOP_CLOSE(), the NFSv4
		 * Close operations are delayed until ncl_inactive().
		 * However, since VOP_INACTIVE() is not guaranteed to be
		 * called, we need to do it again here.
		 */
		(void) nfsrpc_close(vp, 1, ap->a_td);

	/*
	 * If the NLM is running, give it a chance to abort pending
	 * locks.
	 */
	if (nfs_reclaim_p != NULL)
		nfs_reclaim_p(ap);

	/*
	 * Destroy the vm object and flush associated pages.
	 */
	vnode_destroy_vobject(vp);

	vfs_hash_remove(vp);

	/*
	 * Call nfscl_reclaimnode() to save attributes in the delegation,
	 * as required.
	 */
	if (vp->v_type == VREG)
		nfscl_reclaimnode(vp);

	/*
	 * Free up any directory cookie structures and
	 * large file handle structures that might be associated with
	 * this nfs node.
	 */
	if (vp->v_type == VDIR) {
		dp = LIST_FIRST(&np->n_cookies);
		while (dp) {
			dp2 = dp;
			dp = LIST_NEXT(dp, ndm_list);
			FREE((caddr_t)dp2, M_NFSDIROFF);
		}
	}
	if (np->n_writecred != NULL)
		crfree(np->n_writecred);
	FREE((caddr_t)np->n_fhp, M_NFSFH);
	if (np->n_v4 != NULL)
		FREE((caddr_t)np->n_v4, M_NFSV4NODE);
	mtx_destroy(&np->n_mtx);
	uma_zfree(newnfsnode_zone, vp->v_data);
	vp->v_data = NULL;
	return (0);
}
예제 #3
0
파일: nfs_clnode.c 프로젝트: coyizumi/cs111
int
ncl_inactive(struct vop_inactive_args *ap)
{
	struct nfsnode *np;
	struct sillyrename *sp;
	struct vnode *vp = ap->a_vp;
	boolean_t retv;

	np = VTONFS(vp);

	if (NFS_ISV4(vp) && vp->v_type == VREG) {
		/*
		 * Since mmap()'d files do I/O after VOP_CLOSE(), the NFSv4
		 * Close operations are delayed until now. Any dirty
		 * buffers/pages must be flushed before the close, so that the
		 * stateid is available for the writes.
		 */
		if (vp->v_object != NULL) {
			VM_OBJECT_WLOCK(vp->v_object);
			retv = vm_object_page_clean(vp->v_object, 0, 0,
			    OBJPC_SYNC);
			VM_OBJECT_WUNLOCK(vp->v_object);
		} else
			retv = TRUE;
		if (retv == TRUE) {
			(void)ncl_flush(vp, MNT_WAIT, NULL, ap->a_td, 1, 0);
			(void)nfsrpc_close(vp, 1, ap->a_td);
		}
	}

	mtx_lock(&np->n_mtx);
	if (vp->v_type != VDIR) {
		sp = np->n_sillyrename;
		np->n_sillyrename = NULL;
	} else
		sp = NULL;
	if (sp) {
		mtx_unlock(&np->n_mtx);
		(void) ncl_vinvalbuf(vp, 0, ap->a_td, 1);
		/*
		 * Remove the silly file that was rename'd earlier
		 */
		ncl_removeit(sp, vp);
		crfree(sp->s_cred);
		TASK_INIT(&sp->s_task, 0, nfs_freesillyrename, sp);
		taskqueue_enqueue(taskqueue_thread, &sp->s_task);
		mtx_lock(&np->n_mtx);
	}
	np->n_flag &= NMODIFIED;
	mtx_unlock(&np->n_mtx);
	return (0);
}
예제 #4
0
파일: nfs_clnode.c 프로젝트: ryo/netbsd-src
int
ncl_inactive(struct vop_inactive_args *ap)
{
	struct vnode *vp = ap->a_vp;
	struct nfsnode *np;
	boolean_t retv;

	if (NFS_ISV4(vp) && vp->v_type == VREG) {
		/*
		 * Since mmap()'d files do I/O after VOP_CLOSE(), the NFSv4
		 * Close operations are delayed until now. Any dirty
		 * buffers/pages must be flushed before the close, so that the
		 * stateid is available for the writes.
		 */
		if (vp->v_object != NULL) {
			VM_OBJECT_WLOCK(vp->v_object);
			retv = vm_object_page_clean(vp->v_object, 0, 0,
			    OBJPC_SYNC);
			VM_OBJECT_WUNLOCK(vp->v_object);
		} else
			retv = TRUE;
		if (retv == TRUE) {
			(void)ncl_flush(vp, MNT_WAIT, NULL, ap->a_td, 1, 0);
			(void)nfsrpc_close(vp, 1, ap->a_td);
		}
	}

	np = VTONFS(vp);
	mtx_lock(&np->n_mtx);
	ncl_releasesillyrename(vp, ap->a_td);

	/*
	 * NMODIFIED means that there might be dirty/stale buffers
	 * associated with the NFS vnode.  None of the other flags are
	 * meaningful after the vnode is unused.
	 */
	np->n_flag &= NMODIFIED;
	mtx_unlock(&np->n_mtx);
	return (0);
}